Cover for vehicle seat headrest



FIG. 1 is a perspective view of a cover for a vehicle seat headrest showing my new design;

FIG. 2 is a front view thereof; and,

FIG. 3 is top plan view thereof.

The broken line showing a headrest covering and draw strings is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a cover for vehicle seat headrest, as shown and described. 